Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é o chefe de governo de Don Stephen Senanayake?
 ###Tabelas: CREATE TABLE mixed_martial_arts_record_incomplete (mixed_martial_arts_record_incomplete_id AUTO_INCREMENT PRIMARY KEY, Res. VARCHAR, Record VARCHAR, Opponent VARCHAR, Method VARCHAR, Event VARCHAR, Round VARCHAR, Time VARCHAR, Location VARCHAR) CREATE TABLE list_of_foreign_ministers (list_of_foreign_ministers_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Party VARCHAR, Tenure VARCHAR, Head(s) of Government VARCHAR, Ministerial title VARCHAR) CREATE TABLE defunct_callsigns (defunct_callsigns_id AUTO_INCREMENT PRIMARY KEY, Callsign VARCHAR, Area served VARCHAR, Frequency VARCHAR, Band VARCHAR, Freq currently VARCHAR, Purpose VARCHAR) CREATE TABLE pool_2 (pool_2_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Tries for INT, Tries against INT, Try diff VARCHAR, Points for INT, Points against INT, Points diff VARCHAR) CREATE TABLE equipment (equipment_id AUTO_INCREMENT PRIMARY KEY, Builder VARCHAR, Construct- tion no. INT, Date ordered VARCHAR, Wheel arrange- ment VARCHAR, s Cylinder VARCHAR, Engine weight VARCHAR, TC&StL no. (1883–84) INT)  
SELECT Head(s) of Government FROM list_of_foreign_ministers WHERE Name = don stephen senanayake